Architecture and design

Ceph is a scalable storage cluster based on RADOS (reliable, autonomic distributed object store), which is a selfhealing and self-managing distributed object storage system. It has two types of nodes, Ceph Monitor and Ceph OSD. A Ceph Monitor node maintains the state of the cluster map to check for node availability, and provides the cluster map to the cluster clients. A Ceph OSD Daemon is an intelligent peer,